Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 15, NWS Corpus Christi, TX

May 17, 2002Webb County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at May 17, 2002, 12:07 AM CDT for Webb County, Texas. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 17, 2002, 12:07 AM CDT (05:07 UTC)
Expired
May 17, 2002, 1:00 AM CDT
In force
53 min
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

County Webb County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 5.1 hours before the alert went out and 207 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2002-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2222 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2002-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2222 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
2141 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KCRP 170507
SVRCRP
TXC479-170600-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1206 AM CDT FRI MAY 17 2002

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN WEBB COUNTY IN TEXAS

* UNTIL 100 AM CDT

* AT 1153 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER COLUMBIA BRIDGE...OR ABOUT 23 MILES
  NORTHWEST OF LAREDO...MOVING EAST AT 35 MPH.

* SOME LOCATIONS THREATENED THROUGH 100 AM CDT...
  LAREDO...

THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  HAIL UP TO THE SIZE OF DIMES...
  WINDS UP TO 60 MILES AN HOUR...
  VERY HEAVY RAINFALL WHICH MAY CAUSE LOCALIZED FLOODING...




LAT...LON 2792 10009 2741 9993 2741 9922 2821 9943

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Corpus Christi, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 9:05 PM CDT, 3 hours 2 minutes earlier.

Area forecast discussion, May 16, 9:05 PM CDT, 3 hours 2 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
905 PM CDT THU MAY 16 2002

CONVECTIVE MCS CONTINUES TO DEVELOP ALONG THE SFC TROF AXIS IN THE
PLAINS OF THE SIERRA MADRE...SOUTHWEST OF EAGLE PASS. THIS ACTIVITY
APPEARS TO BE MOVING INTO A VERY UNSTABLE REGION WITH A MINIMAL
CAP...WHICH SHOULD ALLOW THE SYSTEM TO CROSS THE RIO GRANDE...AND
AFFECT NORTHERN PORTIONS OF WEBB...DIMMIT AND LASALLE COUNTIES.
GOES POINT SOUNDINGS FOR LRD SHOWS CAPE 4000 J/KG...WHILE CRP 00Z
SOUNDING RECORDED CAPE 3000 J/KG AND PWATS 2.00 INCHES. SO THERE IS
PLENTY OF MOISTURE IN PLACE. PRECIP AREA IS MOVING EAST AT ABOUT 40
MPH AND COULD GENERATE SOME ISOLATED STRONG TO SEVERE WX...DUE TO
HIGH CAPES. THE MEAN FLOW IS WEAK...SO IT COULD ALSO SLOW DOWN AND
PRODUCE SOME HEAVY RAINFALL. WILL CONTINUE TO MONITOR THIS AREA
CLOSELY THROUGH THE OVERNIGHT HOURS...AND ISSUE UPDATES AS
NECESSARY.

WILL UPDATE ZONES TO ADD POPS IN THE WEST. WILL ALSO TWEAK WINDS TO
REFLECT SOME DECOUPLING. TEMPS LOOK FINE WITH MOIST ONSHORE FLOW AND
GOOD CLOUD COVER TONIGHT. NO CHANGES TO MARINE.

.CRP...SCA GMZ230-235.

75/81

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 17, 12:57 AM CDTSevere Thunderstorm WarningCRPDuval, Webb48 min
May 17, 1:41 AM CDTSevere Thunderstorm WarningCRPDuval, Jim Wells49 min
May 17, 4:04 PM CDTSevere Thunderstorm WarningCRPGoliad, Victoria41 min
May 17, 4:38 PM CDTSevere Thunderstorm WarningCRPBee67 min
May 17, 4:38 PM CDTSevere Thunderstorm WarningCRPBee, Calhoun, Duval, Goliad, Live Oak, Refugio and 2 more3 hr
May 17, 4:46 PM CDTSpecial Marine WarningCRP119 min
May 17, 5:13 PM CDTFlash Flood WarningCRPGoliad2 hr
May 17, 5:48 PM CDTSevere Thunderstorm WarningCRPDuval, Jim Wells, Live Oak, McMullen2 hr
May 17, 5:53 PM CDTSevere Thunderstorm WarningCRPNueces, San Patricio3 hr
May 17, 6:50 PM CDTSevere Thunderstorm WarningCRPDuval2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.